摘要:
A method for attaching a flat screen display device onto a flat surface using a surface mounted holder is disclosed. The holder includes a plurality of springy electrical contacts and a plurality of hooks each having a latch. The rear surface of the display device includes corresponding electrical contacts for corresponding with the plurality of springy electrical contacts and sockets each with a convex area corresponding to the hooks each having a latch. The method includes mounting the sockets onto the hooks and pushing the display device toward the flat surface by overcoming a biasing force of the springy contacts; and sliding the display device in a direction opposite to the direction of the hooks until the springy electrical contacts engage the corresponding electrical contacts and every convex area is latched by every latch, and is secured by thebiasing force for preventing accidental release of the display device.
摘要:
An apparatus for identifying location of a scene which is viewed via a remotely operated system includes a first TV camera operated to observe a scene through a narrow angle lens and a second TV camera to observe the scene through a wide angle lens. At least the first TV camera has a dual mode image pick up device which executes either color mode or a black and white mode. Both TV cameras are moved co-jointly. The apparatus has a processor which combines video signals generated by both TV cameras. At least one of the TV cameras has a switchover unit which switches the modes of the image pick up device from one mode to another and back. The processor activates the switching from one to another mode by comparing video signals generated by the first and second TV cameras with a reference signal.
摘要:
In a method and apparatus for connecting an e-shopping facility such as an e-concierge station or an e-service or e-merchandise provider, with an e-shopping appliance, such as a television interphone monitor or a shopping terminal, or a television receiver including central processing unit and a memory, via a communication network such as a private network, public network or the internet and through an interface unit, wherein an e-shopping software programs are installed into the memory of the central processing unit which enables to select and process orders for e-service and/or e-merchandise on the basis of the installed programs. A shopping signal is generated and propagated between the shopping appliance and the interface unit and processed through the interface unit. An interfaced shopping signal is then communicated between the interface unit and the e-shopping facility.
摘要:
In a method and apparatus for connecting fiber optic lines and a fiber optic receiver and a fiber optic transmitter in an information transmission system carrying information signals propagated from a transmitter to a receiver in one direction and an external synchronizing signal from the receiver to the transmitter in the opposite direction, a fiber optic receiver includes a circuit for receiving an optical information signal from the transmitter and converting that signal into an electrical signal which is processed into an information signal outputted to the transmission line via a common connector. A pulse signal transmitted to the fiber optic receiver is retrieved and separated from the information signal. The pulse signal is an external synchronizing signal having a voltage level higher than the maximum level or lower than the minimum voltage level of the video signal. The pulse signal is injected into the information transmission line or the fiber optic line. Another circuit processes the separated pulse signal and converts it into an optical signal emitted through one or more fiber optic lines or cables towards the transmitter. The fiber optic transmitter includes a circuit which receives an information signal from the transmitter. This signal is converted into an optical signal emitted through the fiber optic cables to the receiver.
摘要:
A method and apparatus for connecting a television interphone monitor system including at least one television interphone monitor connected via internal communication lines and a matrix selector with at least one entrance panel, and with at least one interface unit to an E concierge station via a communication network selected from the group consisting of dedicated network, public network and the Internet.
摘要:
An adjustable housing for a surveillance TV camera which can be mounted by a mount to a wall, a pole or a ceiling inside or outside the building includes a front panel, an adjustable camera support for adjustably mounting the TV camera inside the housing, an adjustable pane assembly with front and rear holders and a transparent window having a transparent pane enclosed between the two holders and a rear support for supporting and locking the pane assembly to the front panel. The front holder has a front window frame which is smaller than the opening in the front panel through which the TV camera is aimed at different zones.
摘要:
A combination of a swivel joint with an arm for mounting an apparatus for surveillance applications, such as a television camera includes a truncated ball, an arm attached at the end thereof to the truncated ball and having a passage for a cable, a ring-shaped holder having an inner curved rim of a curvature radius equal to that of the truncated ball for locking that truncated ball. An elongated cylindrical cover having an elongated cutout provides a passage to the arm for gripping the truncated ball and provides the arm with positioning capacity extending through the length of the cutout. A locking nut locks the cylindrical cover to the ring-shaped holder. The cylindrical cover can be rotated for positioning the cutout so that the arm can be adjusted to any position within the length of the cutout and the cable passing through the truncated ball and the holder is not obstructed.
摘要:
A television camera apparatus for surveillance applications includes a television camera having a base plate to be attached to a supporting structure, a camera holder fixed to the base plate and a camera body protruding from the camera holder. The camera body includes two antipodal segments spaced from each other and fixedly attached to the camera holder and having chord planes facing to and parallel to each other and a central segment disposed between the antipodal segments and having a shape of an arcuated drum having two sides parallel to each other and a thickness slightly smaller than the distance between the chord planes of the two antipodal segments facing each other. The central segment houses a picture pickup element, a lens and a lens pane which has a curvature surface of a diameter equal to that of the central segment so that the television camera looks like a dome-shaped television camera.
摘要:
In a converting method and apparatus therefor, synchronizing signal is received from an external synchronizing signal generator, which includes a circuit which generates two or more frequency signals, and alternately transmits these signals to the converting apparatus. The apparatus includes a decoder circuit for decoding an alternating rate of the frequency signals, outputted from the external synchronizing signal generator, and generating a new synchronizing pulse signal on the basis of the decoded signal. The new synchronizing pulse signal which has a level higher than the white level or lower than the black level of a composite video signal, generated by the TV camera, is injected into a video transmission line connected to the TV camera for synchronizing the latter on the basis of the injected synchronizing pulse.
摘要:
In an information transmission system including transmitters, a receiver, and a transmission line for transmitting information signals from the transmitters to the receiver, the transmission line is shared by the information signals and external sync signals which are adapted to synchronize the transmitters to each other. The external sync signals have a voltage level higher than a maximum voltage level of the information signals or lower than a minimum voltage level of the same, and are transmitted to the transmitters over the transmission line by using blanking level portions of the information signals. The external sync signals are separated from the information signals based on their level difference and, then, applied to the transmitters. Amplifier circuits for blocking the propagation of signals toward the transmitters are installed in the transmission line, while bypass circuits are connected to the transmission line each in parallel to the associated amplifier circuit so as to allow only the external sync signals to be transmitted toward the transmitters based on a signal voltage level.